Microsoft's MAI coding models reach Copilot and VS Code.

MAI-Code-1-Flash, a 5B-parameter coding model, is in GitHub Copilot and VS Code, and Microsoft says it beats Claude Haiku 4.5 across core coding benchmarks, +16 points on SWE-Bench Pro at 51.2% versus 35.2%, using up to 60% fewer tokens. MAI-Thinking-1, a 35B-active MoE with a 256K context window, hits 97% on AIME 2025 and 53% on SWE-Bench Pro, near Opus 4.6, and was trained without OpenAI data. Source: Microsoft AI That last clause is the real headline. Microsoft is building a first-party model stack to cut its OpenAI dependence, and a 5B model beating Haiku on coding at 60% fewer tokens is a credible opening move.